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伴随经济的快速发展,追逐经济效益而忽略生态效益的土地利用越来越突出,区域土地系统的生态服务功能降低、所提供的产品与服务严重下降,影响了区域的可持续发展.研究以重庆市沙坪坝区为例,运用生态服务价值的方法,通过对1996-2006年沙坪坝区的土地利用中所诱发的生态效益量进行估算,结合区域经济发展,对未来区域生态状况趋势进行预测.结果表明:沙坪坝区在1996-2006年间的土地利用的生态服务价值由1 332.5×104$/hm2减少为1 214.05×104$/hm2,共减少了118.45×104$/hm2;各乡镇的生态服务价值贡献状况表现不一,有增有减;沙坪坝区未来生态状况主要表现为生态重建区(井口、覃家岗等镇)、生态控制区(土主、西永等镇)、生态保护区(中梁、歌乐山等镇)和生态敏感区(曾家、青木关等镇)4种趋势.
Along with the rapid economic development, land use chasing economic benefits and neglecting ecological benefits has become more and more prominent, the ecological service functions of regional land systems have been reduced, and the products and services provided have seriously deteriorated, affecting the sustainable development of the region. Taking Shapingba District of Shapingba District as an example, using the method of ecological service value, this paper estimates the ecological benefit induced by land use in Shapingba District from 1996 to 2006, predicts the trend of future ecological status in combination with regional economic development.The results show : The value of ecological services for land use in Shapingba District decreased from 1 332.5 × 104 $ / hm2 to 1 214.05 × 104 $ / hm2 during 1996-2006, a total decrease of 118.45 × 104 $ / hm2. The value of ecological services in each township The ecological status of Shapingba district is mainly manifested in ecological reconstruction areas (such as the towns of Wellhead and Tanjiagang), ecological control areas (such as Tuzhu and Xiyong Towns), ecological protection zones (Zhongliang, Geleshan And other towns) and ecologically sensitive areas (Zeng, Aoki and other towns) four kinds of trends.